Dentifrice



Patented May 31, 1932 UNITED STATES PATENT OFFICE RICHARD PASTERNAGK, OFBROOKLYN, NEW YORK, ASSIGNOR TO CHARLES PFIZER & COMPANY, OF BROOKLYN,NEW YORK, A CORPORATION OF NEW-JERSEY DEN'IIFRICE Io Drawing.

This invention relates to improvements in dentifrices and moreparticularly to the base used in such dentifrices.

Anobject of this invention is to provide a dentifrice having a basepossessing the advantageous properties of the bases heretofore knownand, furthermore, being more palatable than the heretofore known bases.

A further object is to provide a dentifrice having a base which ispeculiarly adapted not to irritate the gums.

A still furtherobject is to provide a tooth paste in which the solid andliquid ingredients will remain in a homogeneous mixture after beingfilled into tubes.

An acce table base must assist in the mechanical c eansing action of thetooth brush without causing undesirable abrasion of theteeth, and mustbe compatible with various chemicals used in dentifrices for maintainingthe teeth and gums in a healthy condition, such as weak acids, mildastringents, deodorants and disinfectants.

Substances such as calcium carbonate and phosphate, magnesium carbonateand hydroxide, are not entirely satisfactory, as they leavedisagreeablechalky after-taste in of tooth pastes employing these the mouth andbecause of relative insolubility tend to irritate the gums and leavefine partlcles lodged in the gums.

- Another objection to bases heretofore known is that the solid andliquid ingredients bases have a tendency to separate on storin thistendency being particularly noticeab e with considerable changes intemperature.

The present mvention lies in the discovery that salts of gluconic acidare well suited for use as the base for dentifrices,'having propertiesmaterially more favorable for such use than the substances heretoforeused. Of these salts of gluconic acid, the calcium and magnesiumgluconates are preferred. 7

These gluconates are distinguishedv from bases heretofore known in thatthey leave no chalky after-taste, and due to their relatively greatsolubility in water, calcium glu- 9 particleso'fthe same can andmagnesium-glubody temperature, be completely reconate being about 3%conate being about 16% at Application filed December 20, 1929. SerialNo. 415,611.

moved from the mouth by rinsing with water, thereby eliminating antendenc to irritate the gums; Because of the big solubility of magnesiumgluconate, a dentifrice. containing the same is of great value topersons with tender gums. -For such gums, a polishing agent whoseparticles dissolve very quickly is ,desirable. Furthermore, these saltshave a mild cleansing action without undesirable abrasion of the teeth,and are not affected by the various chemicals. used in. dentifrices. e

These gluconates are further distinguished from bases heretofore knownin that the form with the liquid ingredients of a tooth paste, ahomogeneous mixture which shows no tendency to separate into itscomponent parts. ly-used binders such as gums are omitted from themixture. This desirable property of these gluconat'es is due to theirpeculiar crystalline structure which is such that liquids are readilyabsorbed and the mixture becomes plastic similar to mixtures of clay andliquids.

To illustrate the invention, the following examples of dentifrices aregiven, parts by weight, but it is to be understood that the iriventionis not restricted to these examp es E wample I. The following is acomposition of a tooth paste embodying the invention:

Ewwmple II. A tooth powder composition embodying this invention is asfollows:

Calcium gluconate 100 parts Magnesium peroxide 2 parts Flavoring to suitExample I I I A second tooth powder composition embodying this invent onis as follows:

Calcium gluconate Zinc citrate 1 part Flavoring to suit This is trueeven Where the commonparts Magnesium gluconate can be substituted forthe calcium gluconate in the above examples without otherwise changingthe composition.

The invention claimed is:

- 1. A dentifrice comprising a cleansing and polishing agent consistingof a member selected from the group consisting of calcium gluconate andmagnesium gluconate.

2. A dentifrice comprisinga cleansing and polishing agent consisting ofcalcium gluconate.

3. A dentifrice comprising a cleansing and polishing agent consisting ofmagnesium gluconate.

4. A dentifrice comprising from to 98% calcium luconate.

Signe at Brooklyn, in the county of Kings, and State of New York, this17th day of December, A. D. 1929.

RICHARD PASTERNAOK.

